Facial Care for Sensitive Skin?

I am sure this question has been asked before, but each answer I read did not really help me in particular. I am 23 years old and I used to not have any pimples until recently (very small red ones), which I am guessing is because of stress and just not taking care of my body as I should. Whatever the case, I would still like a solution which would allow me to have clear skin without spending too much money on it. I have tired several face cleanser, but either ended up breaking out because it was too strong, or it was too weak to do anything at all. I have very sensitive skin.

P.S. If nothing else, I was wondering if you know if there are sites where they just give out samplers of each face cleanser, because I am getting tired of purchasing more and more cleansers that don't work on me and end up just throwing it away.